Characterization of Pathogenic Escherichia coli in River Water by Simultaneous Detection and Sequencing of 14 Virulence Genes.

@article{Gomi2015CharacterizationOP,
  title={Characterization of Pathogenic Escherichia coli in River Water by Simultaneous Detection and Sequencing of 14 Virulence Genes.},
  author={Ryota Gomi and Tomonari Matsuda and Yuji Fujimori and Hidenori Harada and Yasuto Matsui and Minoru Yoneda},
  journal={Environmental science \& technology},
  year={2015},
  volume={49 11},
  pages={
          6800-7
        }
}
The occurrence of pathogenic Escherichia coli in environmental waters increases the risk of waterborne disease. In this study, 14 virulence genes in 669 E. coli isolates (549 isolates from the Yamato River in Japan, and 30 isolates from each of the following hosts: humans, cows, pigs, and chickens) were simultaneously quantified by multiplex PCR and dual index sequencing to determine the prevalence of potentially pathogenic E. coli. Among the 549 environmental isolates, 64 (12%) were classified… 
Whole-Genome Analysis of Antimicrobial-Resistant and Extraintestinal Pathogenic Escherichia coli in River Water
TLDR
The results indicate contamination of surface waters by E. coli strains belonging to clinically important clonal groups, demonstrating the clonal distribution of environmental ExPEC strains.
Pathotyping of Escherichia coli isolated from community toilet wastewater and stored drinking water in a slum in Bangladesh
TLDR
It is indicated that sanitary wastewater from the slum was heavily contaminated with pathogenic E. coli, posing a great health risk.
Prevalence, diversity and genetic structure of Escherichia coli isolates from septic tanks.
TLDR
The results of this study indicated that the temperature of the septic tank could explain some of the variation observed in the number of E. coli isolates recovered per septic tanks, whereas pH was an important driver ofE.
Characteristics of Carbapenemase-Producing Enterobacteriaceae in Wastewater Revealed by Genomic Analysis
TLDR
It is indicated that CPE with various carbapenemase-encoding genes in different genetic contexts were present in biologically treated wastewater, highlighting the need to monitor for antibiotic resistance in wastewater.
Occurrence of Clinically Important Lineages, Including the Sequence Type 131 C1-M27 Subclone, among Extended-Spectrum-β-Lactamase-Producing Escherichia coli in Wastewater
TLDR
It is indicated that ESBLEC strains belonging to clinically important lineages, including the C1-M27 clade, may disseminate into the environment through wastewater, highlighting the need to monitor for antibiotic resistance in wastewater.
Change in the Structure of Escherichia coli Population and the Pattern of Virulence Genes along a Rural Aquatic Continuum
TLDR
Results show that, the run-off of small cattle farms contributed, as much as the wastewater effluent, in the dissemination of pathogenic E. coli in both water and sediments, even if the microbiological quality of the water was good or to average quality according to the French water index.
High levels of drug resistance in commensal E. coli in a cohort of children from rural central India
TLDR
The high prevalence of antibiotic resistance in commensal E. coli in rural community from India needs urgent measures to control the growing antibiotic resistance crisis.
Determination of the Microbial and Chemical Loads in Rivers from the Quito Capital Province of Ecuador (Pichincha)—A Preliminary Analysis of Microbial and Chemical Quality of the Main Rivers
TLDR
Analysis of the quality of 18 rivers located in Quito, the capital province of Pichincha, Ecuador, through physico-chemical and microbial parameters revealed severe contaminations in Ecuadorean Rivers.
...
1
2
...

References

SHOWING 1-10 OF 61 REFERENCES
Occurrence of Intestinal and Extraintestinal Virulence Genes in Escherichia coli Isolates from Rainwater Tanks in Southeast Queensland, Australia
TLDR
The presence of multiple VGs in E. coli strains belonging to the STEC, EPEC, ETEC, and ExPEC pathotypes in rainwater tanks should be assessed, as the water is used for drinking and other, nonpotable purposes.
Prevalence and Persistence of Escherichia coli Strains with Uropathogenic Virulence Characteristics in Sewage Treatment Plants
TLDR
The results indicate that certain clonal groups of E. coli with virulence characteristics of uropathogenic strains can survive the treatment processes of STPs.
Identification of Unconventional Intestinal Pathogenic Escherichia coli Isolates Expressing Intermediate Virulence Factor Profiles by Using a Novel Single-Step Multiplex PCR
TLDR
This study developed and evaluated a one-step multiplex PCR (MPCR) for the straightforward differential identification of intestinal pathotypes of E. coli and identified five unconventional strains expressing intermediate virulence factor profiles.
Occurrence of Virulence and Antimicrobial Resistance Genes in Escherichia coli Isolates from Different Aquatic Ecosystems within the St. Clair River and Detroit River Areas
TLDR
The results of this environmental study using DNA microarrays highlight the widespread distribution of E. coli pathotypes in aquatic ecosystems and the potential public health threat of E .
Biological and Physicochemical Wastewater Treatment Processes Reduce the Prevalence of Virulent Escherichia coli
TLDR
A reduction of the proportion of pathogenic E. coli could not be explained by the preferential loss of one virulence gene or one type of virulence factor; however, the quinolone resistance gene (qnrS) appears to enhance the loss of virulent genes, suggesting a mechanism involving the lost pathogenicity islands.
An attempt to identify the likely sources of Escherichia coli harboring toxin genes in rainwater tanks.
TLDR
It is recommended that rainwater should be treated prior to drinking and proper maintenance of roof and gutter hygiene and elimination of overhanging tree branches and other structures where possible to prevent the movement of possums are highly recommended.
Quantitative PCR measurements of Escherichia coli including shiga toxin-producing E. coli (STEC) in animal feces and environmental waters.
TLDR
The data presented in this study will aid in the estimation of quantitative microbial risk assessment (QMRA) from fecal pollution of domestic and wild animals in drinking/recreational water catchments.
...
1
2
3
4
5
...